mirror of
https://git.rtems.org/rtems-libbsd/
synced 2025-05-13 20:09:34 +08:00
Remove superfluous support for preloaded modules
This commit is contained in:
Sebastian Huber
parent
8bf5f93ac1
commit
54fcbf1d4a
@ -1,313 +0,0 @@
|
|||||||
#include <machine/rtems-bsd-kernel-space.h>
|
|
||||||
|
|
||||||
/*-
|
|
||||||
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
||||||
*
|
|
||||||
* Copyright (c) 1998 Michael Smith
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions
|
|
||||||
* are met:
|
|
||||||
* 1. Redistributions of source code must retain the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer.
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright
|
|
||||||
* notice, this list of conditions and the following disclaimer in the
|
|
||||||
* documentation and/or other materials provided with the distribution.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
||||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
||||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
||||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
||||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
||||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
||||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
||||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
||||||
* SUCH DAMAGE.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <sys/cdefs.h>
|
|
||||||
__FBSDID("$FreeBSD$");
|
|
||||||
|
|
||||||
#include <sys/param.h>
|
|
||||||
#include <sys/systm.h>
|
|
||||||
#include <sys/linker.h>
|
|
||||||
|
|
||||||
#include <vm/vm.h>
|
|
||||||
#include <vm/vm_extern.h>
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Preloaded module support
|
|
||||||
*/
|
|
||||||
|
|
||||||
vm_offset_t preload_addr_relocate = 0;
|
|
||||||
caddr_t preload_metadata;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Search for the preloaded module (name)
|
|
||||||
*/
|
|
||||||
caddr_t
|
|
||||||
preload_search_by_name(const char *name)
|
|
||||||
{
|
|
||||||
caddr_t curp;
|
|
||||||
uint32_t *hdr;
|
|
||||||
int next;
|
|
||||||
|
|
||||||
if (preload_metadata != NULL) {
|
|
||||||
|
|
||||||
curp = preload_metadata;
|
|
||||||
for (;;) {
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
if (hdr[0] == 0 && hdr[1] == 0)
|
|
||||||
break;
|
|
||||||
|
|
||||||
/* Search for a MODINFO_NAME field */
|
|
||||||
if ((hdr[0] == MODINFO_NAME) &&
|
|
||||||
!strcmp(name, curp + sizeof(uint32_t) * 2))
|
|
||||||
return(curp);
|
|
||||||
|
|
||||||
/* skip to next field */
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return(NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Search for the first preloaded module of (type)
|
|
||||||
*/
|
|
||||||
caddr_t
|
|
||||||
preload_search_by_type(const char *type)
|
|
||||||
{
|
|
||||||
caddr_t curp, lname;
|
|
||||||
uint32_t *hdr;
|
|
||||||
int next;
|
|
||||||
|
|
||||||
if (preload_metadata != NULL) {
|
|
||||||
|
|
||||||
curp = preload_metadata;
|
|
||||||
lname = NULL;
|
|
||||||
for (;;) {
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
if (hdr[0] == 0 && hdr[1] == 0)
|
|
||||||
break;
|
|
||||||
|
|
||||||
/* remember the start of each record */
|
|
||||||
if (hdr[0] == MODINFO_NAME)
|
|
||||||
lname = curp;
|
|
||||||
|
|
||||||
/* Search for a MODINFO_TYPE field */
|
|
||||||
if ((hdr[0] == MODINFO_TYPE) &&
|
|
||||||
!strcmp(type, curp + sizeof(uint32_t) * 2))
|
|
||||||
return(lname);
|
|
||||||
|
|
||||||
/* skip to next field */
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return(NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Walk through the preloaded module list
|
|
||||||
*/
|
|
||||||
caddr_t
|
|
||||||
preload_search_next_name(caddr_t base)
|
|
||||||
{
|
|
||||||
caddr_t curp;
|
|
||||||
uint32_t *hdr;
|
|
||||||
int next;
|
|
||||||
|
|
||||||
if (preload_metadata != NULL) {
|
|
||||||
|
|
||||||
/* Pick up where we left off last time */
|
|
||||||
if (base) {
|
|
||||||
/* skip to next field */
|
|
||||||
curp = base;
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
} else
|
|
||||||
curp = preload_metadata;
|
|
||||||
|
|
||||||
for (;;) {
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
if (hdr[0] == 0 && hdr[1] == 0)
|
|
||||||
break;
|
|
||||||
|
|
||||||
/* Found a new record? */
|
|
||||||
if (hdr[0] == MODINFO_NAME)
|
|
||||||
return curp;
|
|
||||||
|
|
||||||
/* skip to next field */
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return(NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Given a preloaded module handle (mod), return a pointer
|
|
||||||
* to the data for the attribute (inf).
|
|
||||||
*/
|
|
||||||
caddr_t
|
|
||||||
preload_search_info(caddr_t mod, int inf)
|
|
||||||
{
|
|
||||||
caddr_t curp;
|
|
||||||
uint32_t *hdr;
|
|
||||||
uint32_t type = 0;
|
|
||||||
int next;
|
|
||||||
|
|
||||||
if (mod == NULL)
|
|
||||||
return (NULL);
|
|
||||||
|
|
||||||
curp = mod;
|
|
||||||
for (;;) {
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
/* end of module data? */
|
|
||||||
if (hdr[0] == 0 && hdr[1] == 0)
|
|
||||||
break;
|
|
||||||
/*
|
|
||||||
* We give up once we've looped back to what we were looking at
|
|
||||||
* first - this should normally be a MODINFO_NAME field.
|
|
||||||
*/
|
|
||||||
if (type == 0) {
|
|
||||||
type = hdr[0];
|
|
||||||
} else {
|
|
||||||
if (hdr[0] == type)
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Attribute match? Return pointer to data.
|
|
||||||
* Consumer may safely assume that size value precedes
|
|
||||||
* data.
|
|
||||||
*/
|
|
||||||
if (hdr[0] == inf)
|
|
||||||
return(curp + (sizeof(uint32_t) * 2));
|
|
||||||
|
|
||||||
/* skip to next field */
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
}
|
|
||||||
return(NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Delete a preload record by name.
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
preload_delete_name(const char *name)
|
|
||||||
{
|
|
||||||
caddr_t addr, curp;
|
|
||||||
uint32_t *hdr, sz;
|
|
||||||
int next;
|
|
||||||
int clearing;
|
|
||||||
|
|
||||||
addr = 0;
|
|
||||||
sz = 0;
|
|
||||||
|
|
||||||
if (preload_metadata != NULL) {
|
|
||||||
|
|
||||||
clearing = 0;
|
|
||||||
curp = preload_metadata;
|
|
||||||
for (;;) {
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
if (hdr[0] == MODINFO_NAME || (hdr[0] == 0 && hdr[1] == 0)) {
|
|
||||||
/* Free memory used to store the file. */
|
|
||||||
if (addr != 0 && sz != 0)
|
|
||||||
kmem_bootstrap_free((vm_offset_t)addr, sz);
|
|
||||||
addr = 0;
|
|
||||||
sz = 0;
|
|
||||||
|
|
||||||
if (hdr[0] == 0)
|
|
||||||
break;
|
|
||||||
if (!strcmp(name, curp + sizeof(uint32_t) * 2))
|
|
||||||
clearing = 1; /* got it, start clearing */
|
|
||||||
else if (clearing) {
|
|
||||||
clearing = 0; /* at next one now.. better stop */
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (clearing) {
|
|
||||||
if (hdr[0] == MODINFO_ADDR)
|
|
||||||
addr = *(caddr_t *)(curp + sizeof(uint32_t) * 2);
|
|
||||||
else if (hdr[0] == MODINFO_SIZE)
|
|
||||||
sz = *(uint32_t *)(curp + sizeof(uint32_t) * 2);
|
|
||||||
hdr[0] = MODINFO_EMPTY;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* skip to next field */
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void *
|
|
||||||
preload_fetch_addr(caddr_t mod)
|
|
||||||
{
|
|
||||||
caddr_t *mdp;
|
|
||||||
|
|
||||||
mdp = (caddr_t *)preload_search_info(mod, MODINFO_ADDR);
|
|
||||||
if (mdp == NULL)
|
|
||||||
return (NULL);
|
|
||||||
return (*mdp + preload_addr_relocate);
|
|
||||||
}
|
|
||||||
|
|
||||||
size_t
|
|
||||||
preload_fetch_size(caddr_t mod)
|
|
||||||
{
|
|
||||||
size_t *mdp;
|
|
||||||
|
|
||||||
mdp = (size_t *)preload_search_info(mod, MODINFO_SIZE);
|
|
||||||
if (mdp == NULL)
|
|
||||||
return (0);
|
|
||||||
return (*mdp);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Called from locore. Convert physical pointers to kvm. Sigh. */
|
|
||||||
void
|
|
||||||
preload_bootstrap_relocate(vm_offset_t offset)
|
|
||||||
{
|
|
||||||
caddr_t curp;
|
|
||||||
uint32_t *hdr;
|
|
||||||
vm_offset_t *ptr;
|
|
||||||
int next;
|
|
||||||
|
|
||||||
if (preload_metadata != NULL) {
|
|
||||||
|
|
||||||
curp = preload_metadata;
|
|
||||||
for (;;) {
|
|
||||||
hdr = (uint32_t *)curp;
|
|
||||||
if (hdr[0] == 0 && hdr[1] == 0)
|
|
||||||
break;
|
|
||||||
|
|
||||||
/* Deal with the ones that we know we have to fix */
|
|
||||||
switch (hdr[0]) {
|
|
||||||
case MODINFO_ADDR:
|
|
||||||
case MODINFO_METADATA|MODINFOMD_SSYM:
|
|
||||||
case MODINFO_METADATA|MODINFOMD_ESYM:
|
|
||||||
ptr = (vm_offset_t *)(curp + (sizeof(uint32_t) * 2));
|
|
||||||
*ptr += offset;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
/* The rest is beyond us for now */
|
|
||||||
|
|
||||||
/* skip to next field */
|
|
||||||
next = sizeof(uint32_t) * 2 + hdr[1];
|
|
||||||
next = roundup(next, sizeof(u_long));
|
|
||||||
curp += next;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
@ -239,6 +239,7 @@ static struct keybuf empty_keybuf = {
|
|||||||
static void
|
static void
|
||||||
keybuf_init(void)
|
keybuf_init(void)
|
||||||
{
|
{
|
||||||
|
#ifndef __rtems__
|
||||||
caddr_t kmdp;
|
caddr_t kmdp;
|
||||||
|
|
||||||
kmdp = preload_search_by_type("elf kernel");
|
kmdp = preload_search_by_type("elf kernel");
|
||||||
@ -250,6 +251,7 @@ keybuf_init(void)
|
|||||||
MODINFO_METADATA | MODINFOMD_KEYBUF);
|
MODINFO_METADATA | MODINFOMD_KEYBUF);
|
||||||
|
|
||||||
if (keybuf == NULL)
|
if (keybuf == NULL)
|
||||||
|
#endif /* __rtems__ */
|
||||||
keybuf = &empty_keybuf;
|
keybuf = &empty_keybuf;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -492,7 +492,6 @@ class base(builder.Module):
|
|||||||
'sys/kern/subr_hints.c',
|
'sys/kern/subr_hints.c',
|
||||||
'sys/kern/subr_kobj.c',
|
'sys/kern/subr_kobj.c',
|
||||||
'sys/kern/subr_lock.c',
|
'sys/kern/subr_lock.c',
|
||||||
'sys/kern/subr_module.c',
|
|
||||||
'sys/kern/subr_pcpu.c',
|
'sys/kern/subr_pcpu.c',
|
||||||
'sys/kern/subr_prf.c',
|
'sys/kern/subr_prf.c',
|
||||||
'sys/kern/subr_rman.c',
|
'sys/kern/subr_rman.c',
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user